CAJ | 학술논문

用粒子群优化(PSO)算法对二元相位取样光栅进行优化设计.实现了利用二元相位取样光栅对多信道色散和色散斜率的同时补偿.设计得到的二元相位取样光栅的反射谱各信道均匀,时延线性好,带宽、色散量和色散斜率可以根据实际的光纤类型来调整,对折射率调制要求较低.由于只有π相移,因此其制作比多级相位取样光栅相对简单.与其他优化方法相比,粒子群优化算法具有简单、收敛速度快等优点.
용입자군우화(PSO)산법대이원상위취양광책진행우화설계.실현료이용이원상위취양광책대다신도색산화색산사솔적동시보상.설계득도적이원상위취양광책적반사보각신도균균,시연선성호,대관、색산량화색산사솔가이근거실제적광섬류형래조정,대절사솔조제요구교저.유우지유π상이,인차기제작비다급상위취양광책상대간단.여기타우화방법상비,입자군우화산법구유간단、수렴속도쾌등우점.
The binary phase-sampled fiber Bragg gratings (FBG) were designed and optimized using Particle Swarm Optimization (PSO). The dispersion and its slope can be compensated by using binary phase-sampled FBG. The binary phase-sampled FBG was obtained,whose reflective spectrum is uniform, time delay is linear, bandwidth, dispersion and its slope could be adjusted according to the type of fiber, and the required index change is small. Its fabrication is simpler than multilevel phase-sampled FBG because there is only phase shift of π in it. Compared with other algorithms, the PSO is simpler and faster convergent.